| 21. | The idea of using inclined planes was an innovation that Green had pioneered elsewhere.
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| 22. | Shay built a drift, an inclined plane, and a breaker.
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| 23. | The inclined plane was in operation from 1792 to 1894.
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| 24. | Usually, the surface of the track is almost flush with the inclined plane's surface.
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| 25. | After the development of the inclined plane, Kurz filed for a patent in 1976.
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| 26. | The inclined plane appears to have been pioneered on England's Ketley Canal in 1788.
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| 27. | The data from the inclined plane experiments were used to calculate the expected horizontal motion.
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| 28. | Similarly, an inclined plane, wedge, and screw are a block sliding on a flat surface.
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| 29. | The entrances allow access to of underground canal on four levels, linked by inclined planes.
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| 30. | Powers to build the inclined plane were renewed in 1889, but no construction took place.
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